Cord or cable supporting bracket.



J. V. TRENAMAN. 001m 0R CABLE SUPPORTING BRACKET.

APPLICATION FILED JUNE 4,1909.

Patented May 14, 19-12.

COLUMBIA PLANDGRAPH UNITED STATES PATENT OFFICE.

JOHN V. TRENAMAN, OF NEW YORK, N. Y., ASSIG-NOR TO TRENAMAN DENTAL MANU- FACTURING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CORD OR CABLE SUPPORTING BRACKET.

Specification of Letters Patent.

Patented May 14, 1912.

Application filed June 4, 1909. Serial No. 500,145.

To all whom it may concern:

Be. it known that I, JOHN V. TRENAMAN, a citizen of the United States, and a resident of New York city, in the State of New York, have invented a new and Improved Cord or Cable Supporting Bracket, of which the fOllOWiDg is a specification.

This invention relates to brackets for supporting cords or cables which are attached to a body to be supported thereby, the object being to provide an economical and efficient bracket, for the purpose described, which shall be capable of angular adjustment on its support and also capable of adjustments, by which the object to be supported may have as wide a range of movement as possible, both vertically and horizontally.

With these objects in view, my invention comprises a bracket pivotally supported from a plate, which may be secured to a wall or post, and carrying a pivotally supported arm therein, the outer end of which is provided with a roller, over which the cord or cable may engage, and there is also provided a roller, near the inner end of the bracket, for carrying the cord, the two rollers cooperating to support the cord and permit of its passage thereover, while the arm carrying the outer roller is pivotally con nected with the main part of the bracket to permit of angular adjustment in vertical planes, and such arm is also extensible to add to the range of adjustment.

The accompanying drawings illustrating a bracket in accordance with my invention, as used for supporting a dental engine, are as follows:

Figure 1 is a side elevation of the bracket and shows different positions for parts thereof in dotted lines. Fig. 2 is a view of the bracket as seen from the under side and with the outer end of the extensible member removed. Fig. 3 is a sectional view of the spring actuating mechanism of the bracket,

taken along the dotted line 50-50 of Fig. 2.

Fig. 4 is a plan view of the bracket arms and the bar on which they are supported. Fig. 5 is a sectional view, taken along the line g -y of Fig. 1, of the lever D; all parts to the right of such line being removed.

Similar letters refer to similar parts throughout the several views.

Referring now to Figs. 1 and 2,W represents the wall of a room in which the bracket is to be used and 'w a bracket plate secured thereto and having eye pieces A screwed thereon, as indicated, and within which, there is rotatably supported the pintle or shaft B. An arm C is secured to the upper end of the shaft 13 and extends outwardly and is curved downwardly and formed integrally, at its lower end, with the outer end of a horizontally disposed arm G which is secured at its inner end to the lower part of the shaft B. The bracket arms C and C are bifurcated for purposes hereinafter explained and are adapted to rotate with the shaft B. In the arm C, there is rotatably supported, a pulley G upon the shaft 9. At the outer end of the arm C there is pivotally supported, upon a bolt 9 the lever D having at its inner end, the angularly disposed member a carrying the counter weight I. This lever D is formed of slotted tubular iron and in it, there is slidably secured, the extensible bar member E. In this member E, there is threaded the thumb bolt 0 extending through a slot s therefor in the under side of the slotted tubular lever D to permit of a longitudinal adjustment of the bar E upon and in the lever The outer end of the bar E is bifurcattld and has rotatably supported therein, a roller F. The cable R is connected to a motor II as indicated, and this cable R extends over the pulleys F and (i. and has secured thereon a counter weight in. The bar E can, if desired, be moved outwardly to the position indicated in dotted line at E for which position the roller F occupies the position indicated in dotted lines at F At D, F, I and R are seen in dotted lines, positions of the lever D, roller F, weight I and cord R when the lever D is swung upwardly and for this posit-ion, the arm 0 occupies the position indicated in dotted lines at 0 A T-shaped stop 0 engages the under side of the arm C to prevent the lever D from falling below its horizontal position.

As the diiferent longitudinal adjustments of the bar E in the arm D materially change the leverage of the parts, it is desirable that the counter weight I be adjustable on the arm 6. Again, in view of the fact that the angular position of the arm D disturbs the balance between such arm and the arm 6 and the counter weight I thereon, I have found it desirable to provide a compensating means comprising the following construction, viz :-The shaft g is elongated on the Y which may be adjusted to practically maintain the parts in equilibrium for any desired angular adjustment of the arm D.

In using my bracket, the lever D may be pulled down to its horizontal position and the bar E adjusted thereon as desired and the engine or other device H raised and lowered by the hand of the user to place it at the desired height by moving the weight w up or down. The normal position for the parts, owing to their method of suspension and the adjustments provided, may be varied as clesired and with a variable tendency for the parts to assume such position.

From the foregoing description, it is believed that the construct-ion, operation and method of using my bracket is sufliciently clear to call for no further explanation herein. I may add, however, that it is preferable that the arms C and C as shown, have their corresponding parts connected at their outer ends to stiffen the construction and provide suitable bearing for the shaft 9 What I claim is: j

1. In a device of the character described, a bracket pivoted to swing upon a vertical axis; an arm pivotally supported on the bracket to swing upon a horizontal axis; a counter weight on the inner end of the arm; a roller on the outer end of the arm; a roller carried by the bracket; a cable extending over such rollers and a body to be supported connected to the end of the cable extending over and downwardly from the roller on the arm and a combined counter weight and handle accessibly located on and connected to the portion of the cable extending downwardly from the roller carried by the bracket.

2. In a device of the character described a bracket pivoted to swing upon a vertical axis; an arm pivotally supported on the bracket to swing upon a horizontal axis; a counter weight on the inner end of the arm; a roller on the outer end of the arm; a roller carried by the bracket; a cable extending over such rollers; a body to be supported connected to the end of the cable extending over and downwardly from the roller on the arm; a combined counter weight and handle accessibly located on and connected to the axis; an arm pivotally supported on the I bracket to swing upon a horizontal axis; a counter weight on the inner end of the arm; a roller on the outer end of the arm; a roller carried by the bracket; a cable extending over such rollers; a body to be supported connected to the end of the cable extending over and downwardly from the roller on the arm; a combined counter weight and handle accessibly located on and connected to the portion of the cable extending downwardly from the roller carried by the bracket; a spring for yieldably and adjustably supporting the arm adapted to compensate for varying weights of the arm at dilierent angular positions by correspondingly varying tensions effected thereby on the spring and means for adjusting the tension on such spring for any position of thearm to compensate for different longitudinal extensions of the arm.

THos. F. DIAcK, C. L. MoGLUsKEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

